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Journal articles on the topic 'One and two-handed operation mechanism'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

ZALYUBOVSKYI, Mark, and Igor PANASYUK. "ANALYTICAL INVESTIGATION OF SOME CONSTRUCTIVE PARAMETERS OF A HOLDING MACHINE WITH TWO WORKING CAPACITIES CONNECTED BETWEEN EACH OTHER." Herald of Khmelnytskyi National University. Technical sciences 307, no. 2 (2022): 97–102. http://dx.doi.org/10.31891/2307-5732-2022-307-2-97-102.

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The disadvantages of using machine mechanisms in the kinematic circuits of which contain a passive connection are described. A three-dimensional statically defined mechanism of the “Turbula” type machine without the presence of a passive connection in its kinematic circuit is proposed. This design of the machine is realized due to the introduction into the kinematic circuit of an additional moving link – the second working capacity. Operation of this design of the car allows to increase productivity of processing of details considerably due to the fact that there is a possibility on one car to

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Li, Ke Qin, and Cui Xiang Jiang. "Comparison Research on Two Luffing Mechanisms of Lemniscate Type Crane." Applied Mechanics and Materials 215-216 (November 2012): 146–49. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.146.

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Lemniscate type crane is used for water transhipment operation. There are great differences in outward appearance, geometric shape, luffing performance between lemniscate type crane and normal double-link type crane. Lemniscate type crane has some advantages, i.e. lower centre of weight, practical and reasonable structure, strongly anti-wind, upwarp of flying jib invariably and easy operation. Luffing mechanism of lemniscate type crane has two driving methods, one is boom driving, another back-rocker driving. Based on comparison research, the equations of kinematics of two luffing mechanisms a

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Li, Yezhuo, Yan-An Yao, Junlin Cheng, Yaobin Tian, and Ran Liu. "An agile assistant robot integrating operation and rolling locomotion." Industrial Robot: An International Journal 44, no. 1 (2017): 114–26. http://dx.doi.org/10.1108/ir-05-2016-0147.

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Purpose The purpose of this paper is to propose an agile assistant robot to be used as a mobile partner with two rotational motions and one translational motion. This robot possesses the rolling function and three operating abilities to assistant human beings in the industrial environment. Design/methodology/approach The main body of the robot is a typical 4-RSR (where R denotes a revolute joint and S denotes a spherical joint) parallel mechanism. The mechanism can reach any position on the ground by two rolling modes (the equivalent Watt linkage rolling mode and the equivalent 6R linkage roll

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Gilang Gemilang, Sumarno Sumarno, and Suci Ramadhani. "Legal Analysis of the Impact of Elements of Bribery and Giving Gratification in the Perspective of Anti- Corruption Law in Indonesia." International Conference on Education, Social Sciences and Technology (ICESST) 3, no. 2 (2024): 196–204. https://doi.org/10.55606/icesst.v3i2.445.

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The rampant corruption that continues to be demonstrated by public officials makes it seem as if the law has run out of ways to overcome it. And corruption is a type of crime that is only committed by people who have high intellectual capacity and ability. They continue to try how to avoid corruption crimes, so one of the methods they use is the pattern of giving gifts which is actually intended as a form of bribery. This study analyzes the concept of bribery and gratification and the parameters that differentiate between the two as regulated in several Articles of the Corruption Eradication L

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Zhong, Dongzhou, Wei Luo, Geliang Xu, and Yongqiang Ji. "Optoelectronic Composite Logic Gates Controlled by the Logic Operation in a VCSEL with External Optical Injection." International Journal of Bifurcation and Chaos 26, no. 12 (2016): 1650210. http://dx.doi.org/10.1142/s0218127416502102.

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Based on the polarization switching mechanism in an optically injected vertical-cavity surface-emitting laser (VCSEL), and relying on the new electro-optic modulation theory, we propose a novel approach to implement optoelectronic logic gates. The two linear-polarization (LP) lights from the output of the laser are considered as two logic outputs. Under the electro-optic modulation, one of the logic outputs is the NOT operation with the other one. With the same logic input signal, we perform various digital signal processing (AND, OR, XNOR, NAND, NOR and XOR) in the optical domain, controlling

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Arakawa, Tsutomu, Masao Tokunaga, Takuya Maruyama, and Kentaro Shiraki. "Two Elution Mechanisms of MEP Chromatography." Current Protein & Peptide Science 20, no. 1 (2018): 28–33. http://dx.doi.org/10.2174/1389203718666171117105132.

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MEP (mercapto-ethyl-pyridine) HyperCel is one of the hydrophobic charge induction chromatography (HCIC) resins. Under normal operation, proteins are bound to the MEP resin at neutral pH, at which MEP is not charged, mostly via hydrophobic interaction. MEP has a pyridine group, whose pK is 4.8, and hence is positively charged at acidic pH range. Based on the binding mechanism (i.e., hydrophobic interaction) and the induced positive charge at acidic pH, there may be two ways to elute the bound proteins. One way is to bring the pH down to protonate both MEP resin and the bound protein, leading to

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Toma, Georgeta. "RESEARCH ON THE KINEMATICS OF A MECHANISM WITH A TRIAD AS A COMPONENT." Romanian Journal of Petroleum & Gas Technology 6 (77), no. 1 (2025): 197–204. https://doi.org/10.51865/jpgt.2025.01.13.

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The structural approach to mechanisms from the perspective of component kinematic groups shows that as the class of component groups increases, the complexity of the mechanisms that contain them also increases. From this perspective, it is obvious that solving problems related to the kinematics of these mechanisms also becomes much more difficult to put into practice. In such cases, when mechanisms contain kinematic groups of a class greater than two, determining the analytical expressions of the parameters that establish the configuration of the mechanism during operation is extremely difficu

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Malosio, Matteo, Francesco Corbetta, Francisco Ramìrez Reyes, Hermes Giberti, Giovanni Legnani, and Lorenzo Molinari Tosatti. "On a Two-DoF Parallel and Orthogonal Variable-Stiffness Actuator: An Innovative Kinematic Architecture." Robotics 8, no. 2 (2019): 39. http://dx.doi.org/10.3390/robotics8020039.

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Variable-Stiffness Actuators are continuously increasing in importance due to their characteristics that can be beneficial in various applications. It is undisputed that several one-degree-of-freedom (DoF) solutions have been developed thus far. The aim of this work is to introduce an original two-DoF planar variable-stiffness mechanism, characterized by an orthogonal arrangement of the actuation units to favor the isotropy. This device combines the concepts forming the basis of a one-DoF agonist-antagonist variable-stiffness mechanism and the rigid planar parallel and orthogonal kinematic one

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Ishmanov, Farruh, and Yousaf Bin Zikria. "Trust Mechanisms to Secure Routing in Wireless Sensor Networks: Current State of the Research and Open Research Issues." Journal of Sensors 2017 (2017): 1–16. http://dx.doi.org/10.1155/2017/4724852.

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Routing is one of the most important operations in wireless sensor networks (WSNs) as it deals with data delivery to base stations. Routing attacks can cripple it easily and degrade the operation of WSNs significantly. Traditional security mechanisms such as cryptography and authentication alone cannot cope with some of the routing attacks as they come from compromised nodes mostly. Recently, trust mechanism is introduced to enhance security and improve cooperation among nodes. In routing, trust mechanism avoids/includes nodes in routing operation based on the estimated trust value. Many trust

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Jun, Myoungjae, Hieyong Jeong, and Yuko Ohno. "Operation of assistive apparatus through recognition of human behavior: Development and experimental evaluation of chair-typed assistive apparatus of nine-link mechanism with 1 degree of freedom." Advances in Mechanical Engineering 12, no. 7 (2020): 168781402093889. http://dx.doi.org/10.1177/1687814020938899.

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Because of deterioration of strength, range of joint motion, and balance ability, most care-dependent older adults require assistance to move from a seated position to a standing position. Although many sit-to-stand assisting apparatuses consisting of a seat, power transmission mechanism, and sensors have been developed, most of movements depend several actuators as the power transmission mechanism. This study aims to develop the chair-typed apparatus of nine-link mechanism with 1 degree of freedom at first, then to prove the possibility that the apparatus can be operated through the recogniti

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He, Xiuyun, Xianwen Kong, Damien Chablat, Stéphane Caro, and Guangbo Hao. "Kinematic analysis of a single-loop reconfigurable 7R mechanism with multiple operation modes." Robotica 32, no. 7 (2014): 1171–88. http://dx.doi.org/10.1017/s0263574713001197.

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SUMMARYThis paper presents a novel one-degree-of-freedom (1-DOF) single-loop reconfigurable 7R mechanism with multiple operation modes (SLR7RMMOM), composed of seven revolute (R) joints, via adding a revolute joint to the overconstrained Sarrus linkage. The SLR7RMMOM can switch from one operation mode to another without disconnection and reassembly, and is a non-overconstrained mechanism. The algorithm for the inverse kinematics of the serial 6R mechanism using kinematic mapping is adopted to deal with the kinematic analysis of the SLR7RMMOM. First, a numerical method is applied and an example

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Zhang, Xing, Dejun Mu, Yuze Liu, Jie Bi, and Hongrui Wang. "Type synthesis and kinematics analysis of a family of three translational and one rotational pick-and-place parallel mechanisms with high rotational capability." Advances in Mechanical Engineering 11, no. 6 (2019): 168781401985307. http://dx.doi.org/10.1177/1687814019853076.

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This article proposes a family of spatial three translational and one rotational parallel mechanisms (PMs) for pick-and-place operation. Their features are one independent rotation of the mechanism with four identical limbs, which are provided by the four revolute joints on the moving platform. The rotational capability of the PMs has a range of at least 180°. This article focuses on the synthesis of the PMs and kinematics analysis of the 4- P(2-SS)R parallel mechanism. First, based on the Lie group theory, three parallelograms are used in designing the PMs. The limbs are listed and two types

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Li, Yunjian, Lizi Zhang, Ye Cong, Haoxuan Chen, and Fuao Zhang. "Operation Optimization Model of Regional Power Grid Considering Congestion Management and Security Check in Complex Market Operation Environment." Processes 13, no. 2 (2025): 336. https://doi.org/10.3390/pr13020336.

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Security checks are essential for ensuring the safe operation of the regional power grid (RPG) and the smooth functioning of the electricity spot market (ESM). Currently, China’s RPG operating environment encompasses a complex mix of centralized ESM, decentralized ESM, and planned power generation. This complexity has led to increasingly severe RPG congestion issues. To address this, this paper introduces a security check mechanism design and operational optimization approach tailored for RPGs in complex markets, with a focus on congestion management. Firstly, the paper elaborates on the pract

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Gibson, Marcus I., Percival Yang-Ting Chen, Aileen C. Johnson, et al. "One-carbon chemistry of oxalate oxidoreductase captured by X-ray crystallography." Proceedings of the National Academy of Sciences 113, no. 2 (2015): 320–25. http://dx.doi.org/10.1073/pnas.1518537113.

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Thiamine pyrophosphate (TPP)-dependent oxalate oxidoreductase (OOR) metabolizes oxalate, generating two molecules of CO2and two low-potential electrons, thus providing both the carbon and reducing equivalents for operation of the Wood−Ljungdahl pathway of acetogenesis. Here we present structures of OOR in which two different reaction intermediate bound states have been trapped: the covalent adducts between TPP and oxalate and between TPP and CO2. These structures, along with the previously determined structure of substrate-free OOR, allow us to visualize how active site rearrangements can driv

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Gu, Zhanfei, Hailong Wei, Zhikui Liu, and Mingfei Zhang. "Dynamic Response Mechanism of Silt Ground under Vibration Load." Sustainability 14, no. 16 (2022): 10335. http://dx.doi.org/10.3390/su141610335.

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The frequent vibration loads during the operation of trains can cause vibration deformation of the tunnel structure and surrounding weak strata, thereby endangering the safe operation of trains. The purpose of this paper is to study the dynamic response of surrounding soil layers caused by train vibrations through the finite difference method with FLAC3D. Based on existing research, we studied the artificially deterministic exciting force function. Then, we simulated the tunnel working conditions of a train with a 3D model, and applied the artificially deterministic exciting force function to

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Chen, Danmin, Zhiqiang Zhang, Funa Zhou, and Chaoge Wang. "A Real-Time Fault Diagnosis Method for Multi-Source Heterogeneous Information Fusion Based on Two-Level Transfer Learning." Entropy 26, no. 12 (2024): 1007. http://dx.doi.org/10.3390/e26121007.

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A convolutional neural network can extract features from high-dimensional data, but the convolution operation has a high time complexity and requires a large amount of computation. For equipment with a high sampling frequency, fault diagnosis methods based on convolutional neural networks cannot meet the requirements of online fault diagnosis. To solve this problem, this study proposes a fault diagnosis method for multi-source heterogeneous information fusion based on two-level transfer learning. This method aims to fully utilize multi-source heterogeneous information and external domain data,

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17

ЗАЛЮБОВСЬКИЙ, МАРК, ІГОР ПАНАСЮК, СЕРГІЙ КОШЕЛЬ, ОЛЕКСАНДР КОШЕЛЬ та ОКСАНА РОМАНЮК. "СИНТЕЗ СТАТИЧНО ВИЗНАЧЕНОГО ШАРНІРНОГО ПРОСТОРОВОГО МЕХАНІЗМУ ГАЛТУВАЛЬНОЇ МАШИНИ". Herald of Khmelnytskyi National University. Technical sciences 347, № 1 (2025): 77–83. https://doi.org/10.31891/2307-5732-2025-347-10.

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One of the possible options for freeing the spatial mechanism of a tumbling machine for processing parts from passive coupling is proposed. A synthesis of a statically determined spatial mechanism with a double degree of mobility of a machine for processing parts (tumbling machine) has been carried out, where the working capacity performs a complex spatial movement. A design of a tumbling machine has been developed, which contains two driving links - a driving shaft and a crank. The introduction of an additional movable crank link into the kinematic chain of the spatial mechanism of the machin

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Wang, Shenglin, Zhongshan Hu, and Jiehe Su. "Mechanism Design of Blockage Management Based on Local Flexibility Market under High Proportion of Distributed Energy." Journal of Physics: Conference Series 2442, no. 1 (2023): 012018. http://dx.doi.org/10.1088/1742-6596/2442/1/012018.

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Abstract Continuous access to distributed energy sources greatly increases the uncertainty and complexity of distribution network operations. The distribution network is prone to congestion phenomena such as voltage or tide overruns and equipment overloads, thus causing a decrease in distribution network power supply reliability. Blockage management in distribution networks based on local flexibility markets is one of the blockage management methods currently adopted in many European regions. In order to clarify the operation mechanism of the local flexibility market, firstly, the basic requir

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Zhao, Menglong, Shengzhi Huang, Qiang Huang, et al. "Copula-Based Research on the Multi-Objective Competition Mechanism in Cascade Reservoirs Optimal Operation." Water 11, no. 5 (2019): 995. http://dx.doi.org/10.3390/w11050995.

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Water resources systems are often characterized by multiple objectives. Typically, there is no single optimal solution which can simultaneously satisfy all the objectives but rather a set of technologically efficient non-inferior or Pareto optimal solutions exists. Another point regarding multi-objective optimization is that interdependence and contradictions are common among one or more objectives. Therefore, understanding the competition mechanism of the multiple objectives plays a significant role in achieving an optimal solution. This study examines cascade reservoirs in the Heihe River Ba

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Reddy, Dr Chanda V. "IOT Based Ambulatory Bag Mechanical Ventilator." International Journal for Research in Applied Science and Engineering Technology 9, no. 8 (2021): 1435–39. http://dx.doi.org/10.22214/ijraset.2021.37526.

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Abstract: The IoT-based Ambu bag mechanical ventilator is a ventilator that automates the process of hand press mechanism using the rack and pinion mechanism. The circulatory motion of the rack is converted into linear motion which helps to press the Ambu bag. The proposed project works on three modes of operation that is child-adult and elder which is set wrt to the breaths per minute. There are two states of operation one normal state where the normal working is evidenced whereas the other operation mode is emergency where the buzzer is themed on in case of emergency. All the parameters are

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Jones, L., B. D. Braithwaite, B. Davies, B. P. Heather, and J. J. Earnshaw. "Mechanism of Late Prosthetic Vascular Graft Infection." Cardiovascular Surgery 5, no. 5 (1997): 486–89. http://dx.doi.org/10.1177/096721099700500511.

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This study was a retrospective analysis of 41 patients with late prosthetic graft infections (> 30 days after operation) from six hospitals in the south-west of England. The 41 patients had a median age of 66 years and generally accepted risk factors for infection were documented in 19 patients preoperatively. Thirteen patients had postoperative wound complications and three had early reoperation at the site of subsequent infection. The median time between index operation and symptoms of infection was 10 (range 1–224) months. Abscess (46%) was the most common presentation followed by false

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M., K. Ojha, Pritam Anita, S. C. Kandala V., et al. "FABRICATION OF FIVE WAY MACHINING USING SCOTCH YOKE MECHANISM." Research and Reviews: Journal of Mechanics and Machines 4, no. 2 (2022): 1–9. https://doi.org/10.5281/zenodo.7091364.

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<em>Increasing the productivity is one of the main requirements of production engineering in any kind of manufacturing industry. Either by reducing the operation time or by improving the capability of the machine to produce the components in an increasing number at the same time is very essential for an industry to achieve the same. This project employ’s the Scotch yoke mechanism in power hacksaw machine which enables it to cut into two components at a time there by improving the productivity. In today’s world time a machine should be less time consuming.</em> <em>The scotch mechan

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Nakamura, Tatsuya, and Zhiqi Liu. "Magnetic Linear Motion Mechanism of a 2-Parallel-Finger Hand for Force Operation." Journal of Robotics and Mechatronics 15, no. 6 (2003): 624–31. http://dx.doi.org/10.20965/jrm.2003.p0624.

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Besides assembling, processes like drilling, cutting and pasting are required in various operations in manufacturing of small sized mechanics such as watches, mobile telephones etc. Force control is essential to those dexterous operations. Also absolute positioning of micro-manipulators is required for their autonomous operations. For this purpose, a linear motion hand with two parallel fingers was proposed. It uses a novel parallel link mechanism for linear motion and controls the endeffector by measuring its position with displacement sensors. It uses magnetic suspension technology so that f

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Xiong, Zhong Kan, Pei Zhen Wan, and Jiu Ping Cai. "Study on E-Commerce Platform Operation Mechanism in Big Data Environmen." Applied Mechanics and Materials 687-691 (November 2014): 2776–79. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.2776.

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Big data is one of the important development direction of modern information technology, realizing the sharing and analysis of large data will bring immeasurable economic value, but also has a tremendous role in promoting the social. In the age of big data, unified the data representation, large data processing, query, analysis and visualization are the key problem to be solved urgently. In order to provide a standardized framework construction of the large data service platform, this paper designed a large data service oriented architecture user experience. Secondly, in the aspect of data mod

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Iordache, Constantin Răzvan, Carmen Bujoreanu, Stelian Alaci, Florina-Carmen Ciornei, and Ionut-Cristian Romanu. "Wear Reduction on the Roller–Shoe Mechanism at High Operation Loads." Coatings 14, no. 3 (2024): 316. http://dx.doi.org/10.3390/coatings14030316.

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The roller–shoe mechanism is a classic mechanical assembly with an essential role in motion transmission. Common rail high-pressure pumps are an example of a complex assembly that uses such a mechanism to transform the rotation motion into a translation one. The rolling element of the mechanism is represented by a cylindrical roller. Although it can carry heavy loads due to its design, a proper surface profile could significantly increase the life of the entire mechanism. A better solution can be achieved using a logarithmic profile. The shoe is the second base element of the mechanism. It is

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Karimbaev, T. T., and B. T. Ukuev. "Operating Member of Shock Machines Based on the Non-axial Slider-crank Mechanism with a Disjointed Slider." Mechanical Engineering and Computer Science, no. 7 (October 20, 2018): 1–12. http://dx.doi.org/10.24108/0718.0001399.

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To perform various technological operations to process and destruct materials, power pulses of high amplitude and very short duration are necessary. Special devices, which can be hydraulic, pneumatic, electromagnetic or mechanical pulse generators, generate such shock pulses. Mechanical generators of power pulses can be based on the various mechanisms, many of which are among the mechanisms of a variable structure.The Machinery Researching Institute of National Academy of Sciences of Kyrgyz Republic has offered to use the crank-slider mechanism of a variable structure with a disjointed slider

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Aksungur, Serhat, Muhammet Aydin, and Oğuz Yakut. "Real-time PID control of a novel RCM mechanism designed and manufactured for use in laparoscopic surgery." Industrial Robot: the international journal of robotics research and application 47, no. 2 (2019): 153–66. http://dx.doi.org/10.1108/ir-09-2019-0179.

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Purpose The purpose of this study is to design and manufacture a new remote center of motion (RCM) mechanism for use in laparoscopic surgical operations. In addition, obtaining the forward and inverse kinematic equations of the RCM mechanism and performing real-time position control with the Proportional–Integral–Derivative (PID) control method. Design/methodology/approach At the design stage, it is benefited from similar triangle rule. To obtain the kinematic equations in a simple way and facilitate control, two-fold displacement ratio is provided between the limbs where linear motion occurs.

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Prydalnyi, Borys, and Heorhiy Sulym. "Identification of Analytical Dependencies of the Operational Characteristics of the Workpiece Clamping Mechanisms with the Rotary Movement of the Input Link." Acta Mechanica et Automatica 15, no. 1 (2021): 47–52. http://dx.doi.org/10.2478/ama-2021-0007.

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Abstract The research is devoted to the problem of determining the efficiency of the workpiece fixing mechanism operation. Improving characteristics of workpiece fixing is one of the required conditions to increase the cutting modes, which may help to enhance the machining productivity. The study investigates the main characteristics and general features of a new structure of clamping mechanisms with electromechanical actuators for fixation of rotation bodies. The main advantages of using electromechanical clamping actuators with self-braking gear are presented. Two simplified dynamical models

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Yasen Abd, Rasha, Ali Sachit Kaittan, and Raghad Ali Mejeed. "Implementation of a developed water tunnels cleaning model with an automatic sensing and operation mechanism." International Journal of Engineering & Technology 9, no. 3 (2020): 718. http://dx.doi.org/10.14419/ijet.v9i3.30827.

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Iraq contains two main rivers with several sub streams and tributaries. One of the most important problems in these streams and tributaries is the amount of waste on the water surface. This waste can lead to many issues such as diseases infection and affects the fisheries. River cleaning machine is one of the most important solutions for this problem. In this paper, a developed cleaning machine was designed based on Arduino and remote sensing mechanism to reduce the operation time and cost. The proposed cleaning machine model was tested and validated and can be used efficiently in many places

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Ouyang, Xiang Bo, Ke Tian Li, Hong Jian Xia, et al. "The Parallel Mechanism and Variable Acceleration Control Method." Key Engineering Materials 579-580 (September 2013): 659–64. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.659.

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t presents the parallel mechanism and variable acceleration control method, which is composed of slider, connecting rod, moving platform and linear guide etc. The motion platform is supported by three connecting rods through hinging, the other end of the connecting rods are respectively hinged with two sliders. Among them two pairs of connecting rod, two sliders and the moving platform formed a symmetric structure that is the so called Parallel Mechanism. The third connecting rod is parallel to one of two connecting rods, so that the two parallel connecting rods, slide block and the moving pla

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Neu, W. L., and S. H. Kwon. "DIRECTIONAL GROWTH FOR NUMERICAL WIND WAVE MODELS." Coastal Engineering Proceedings 1, no. 20 (1986): 47. http://dx.doi.org/10.9753/icce.v20.47.

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This study is concerned with the operation of spectral wind wave models. Many spectral wind wave models use a growth mechanism which operates on the point spectrum with directionality being introduced after the fact by the use of a spreading function. It is recognized here that this approach leads to errors whenever the wind and wave fields are not aligned. This is demonstrated by comparing the performance of two first generation models under various conditions. One makes use of a point spectral growth mechanism and follows the operation of the Spectral Ocean Wave Model (SOWM). The other uses

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Yang, Jia Lun, Kuan Jun Zhu, and Bin Liu. "Type Synthesis of Torsional Mass Dampers as Anti-Galloping Devices by Using Planar Four-Bar Mechanisms." Applied Mechanics and Materials 215-216 (November 2012): 285–88. http://dx.doi.org/10.4028/www.scientific.net/amm.215-216.285.

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The type synthesis of torsional mass dampers (TMDs for short) as anti-galloping devices is very import for the safe operation of power grid. In this paper, the TMDs are considered as passive robotic manipulators, with the aim of introducing planar four-bar mechanisms into the synthesis of TMDs. By utilizing one planar four-bar mechanism or two planar four-bar mechanisms in a single TMDs, 6 TMDs with symmetrical structures and 18 TMDs with non-symmetrical structures are synthesized, which may improve the reasonable applications of the TMDs for the solving the anti-galloping issue of power grid.

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Kalmykov, Boris, and Sergey Danilov. "The relevance of the use of an intelligent mechanism in the drive of modern agricultural machines." E3S Web of Conferences 413 (2023): 02043. http://dx.doi.org/10.1051/e3sconf/202341302043.

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The article analyzes theoretical and experimental studies of intelligent mechanism designs, considers the advantages of using intelligent mechanisms for agricultural machines in comparison with traditional structural schemes. The principle of operation of an intelligent mechanism presented in the form of two differential drives for agricultural machines is considered. Planetary mechanisms of this type are systems with two or more degrees of freedom in terms of the number of structural connections, therefore, with one leading link, the movement of their driven links is determined by additional

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Sun, Mengxin, Zhenwei Cao, and Lukai Zheng. "Design and Experiment of a Clamping-Drive Alternating Operation Piezoelectric Actuator." Micromachines 14, no. 3 (2023): 525. http://dx.doi.org/10.3390/mi14030525.

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In recent years, piezoelectric actuators, represented by inertial and inchworm actuators, have been widely applied because of their high accuracy and excellent responsiveness. Despite the development of various piezoelectric actuators, there remain some flaws in this technology. The sticking point is that the piezoelectric actuators based on the friction driving principle are prone to unwanted backward motion when outputting stepping motion. It is thus urgent to explore solutions from the perspectives of principle and structure. In this paper, a clamping-drive alternating operation piezoelectr

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Kolesnikov, Alexander, Tatiana Kokodey, Tatiana Lomachenko, Vasiliy Makarov, and Sofia Pospelova. "Managing the risk of emergency situations caused by staff at thermal power plants." E3S Web of Conferences 91 (2019): 03005. http://dx.doi.org/10.1051/e3sconf/20199103005.

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Optimization of power plant operation in start and stop modes is an important task aimed at increasing the reliability and efficiency of its operation. The purpose of development of the new organizational mechanism is reduction of losses connected with incorrect actions of personnel during launching and shutdown operations of Steam-Gas furnaces of thermal power stations. The work is done on the example of one of the power plants of a large generating company. Implementation has confirmed the high efficiency of innovation. Total cost of project implementation at one station is estimated at the

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Liu, Xiao Yu, Jiang Shao, Xing Hao Wang, and Feng Ming Lu. "Research Progress on Electrostatic Discharge Failure Models in Semiconductor Materials." Advanced Materials Research 548 (July 2012): 527–31. http://dx.doi.org/10.4028/www.scientific.net/amr.548.527.

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Electrostatic discharge (ESD) is a single, fast, high current transfer of electrostatic charge between two objects at different electrostatic potentials, and it is one of the most important failure mechanisms in integrated circuits due to their complex operation condition. The modes, mechanism, and models of the ESD failure were discussed. Firstly failure modes of ESD were classified and the failure mechanisms were described. Then three failure models including Wunsch and Bell model, Speakman model and Tasca model were summarized. The differences of the assumption and application area of these

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Jensen, Brian D., and Larry L. Howell. "Bistable Configurations of Compliant Mechanisms Modeled Using Four Links and Translational Joints." Journal of Mechanical Design 126, no. 4 (2004): 657–66. http://dx.doi.org/10.1115/1.1760776.

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Bistable mechanical devices remain stable in two distinct positions without power input. They find application in valves, switches, closures, and clasps. Mechanically bistable behavior results from the storage and release of energy, typically in springs, with stable positions occurring at local minima of stored energy. Compliant mechanisms offer an elegant way to achieve this behavior by incorporating both motion and energy storage into the same flexible element. Interest in compliant bistable mechanisms has also recently increased because of the advantages of bistable behavior in many micro-e

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Zvîncă, Gabriel. "United Nations Peacekeeping Missions and the Intervention in the Yemeni Civil War (1963-1964)." Acta Musei Napocensis. Historica, no. 57 (January 15, 2021): 249–71. http://dx.doi.org/10.54145/actamn.57.13.

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"The tumultuous 1960s brought a multitude of inter- and intrastatal conflicts in international relations. Some of them derived from extinguished disputes as a subsequent effect of the decolonisation, while others were motivated by the aggressive intentions of states to conquer other states. An example was the Yemeni Civil War (1962–1970) which came in the spotlight of the international community because two neighbours countries, Saudi Arabia and United Arab Republic involved in the internal fight. The external involvement motivated and set the scene for the United Nations Organization to inter

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Mazur, Igor, Dmitry Sheludko, and Mykhailo Petrov. "The study of dynamic processes in the hydraulic system of the roll clamp of a two-cone unwinder rolls pipe-welding unit 159-529." System technologies 2, no. 127 (2020): 25–44. http://dx.doi.org/10.34185/1562-9945-2-127-2020-03.

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The work is devoted to the study of dynamic loads arising in the hydraulic system of the clamping mechanism of a roll of a two-cone unwinder of rolls of tubes of a pipe-welding unit 159-529. The operating experience of the two-cone unwinder has shown that one of its drawbacks is the unsatisfactory operation of the roll clamp hydraulic system, in which increased dynamic loads are observed. In the hydraulic system of the roll clamping mechanism, the executive hydraulic cylinder is located at a large distance from the pressure source, therefore, it uses long hydraulic lines. In transient modes of

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Konstantinov, Andrei, Lev Utkin, and Vladimir Muliukha. "LARF: Two-Level Attention-Based Random Forests with a Mixture of Contamination Models." Informatics 10, no. 2 (2023): 40. http://dx.doi.org/10.3390/informatics10020040.

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This paper provides new models of the attention-based random forests called LARF (leaf attention-based random forest). The first idea behind the models is to introduce a two-level attention, where one of the levels is the “leaf” attention, and the attention mechanism is applied to every leaf of trees. The second level is the tree attention depending on the “leaf” attention. The second idea is to replace the softmax operation in the attention with the weighted sum of the softmax operations with different parameters. It is implemented by applying a mixture of Huber’s contamination models and can

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Qian, Xueqi, Lixin Shen, Dong Yang, Zhiwen Zhang, and Zhihong Jin. "Research on Multimodal Transport of Electronic Documents Based on Blockchain." Big Data and Cognitive Computing 8, no. 6 (2024): 67. http://dx.doi.org/10.3390/bdcc8060067.

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Multimodal transport document collaboration is the foundation of multimodal transport operations. Blockchain technology can effectively address issues such as a lack of trust and difficulties in information sharing in current multimodal transport document collaboration. However, in current research on blockchain-based electronic documents, the bottleneck lies in the collaboration aspect of multimodal transport among multiple entities, known as the “one-bill coverage system” collaborative problem. The collaboration problem studied in this paper involves selecting suitable transport routes accor

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Seidakhmet, Askar, Amandyk Tuleshov, Nutpulla Jamalov, et al. "Research of Kinematics and Dynamics of the Lever Lifting Mechanism Used in the Mobile Automotive Lift." Applied Sciences 13, no. 20 (2023): 11361. http://dx.doi.org/10.3390/app132011361.

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Most of the arm lifts used in today’s industry are designed and manufactured based on the scissor mechanism. Such schemes have one drawback: when the mechanism is raised, their connection points with the base and the movable platform narrow, which leads to a let-down in its stability. This article proposes a new scheme for the lifting device, which eliminates the above disadvantage of scissor schemes. In the scheme developed by the authors, the joints connecting the mechanism to the moving platform and the base are fixed, which means that the distance between the connection points does not cha

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Shao, Quan, Chenchen Xu, and Yan Zhu. "Multi-Helicopter Search and Rescue Route Planning Based on Strategy Optimization Algorithm." International Journal of Pattern Recognition and Artificial Intelligence 33, no. 01 (2018): 1950002. http://dx.doi.org/10.1142/s0218001419500022.

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This paper attempts to develop an efficient route planning algorithm to guide the operations of the multi-helicopter search and rescue in emergency. Route planning model of multi-helicopter cooperative search and rescue activity was established first, based on preference ordering of search and rescue objectives, as well as behavioral model of rescue helicopter and on-board detector. Given the route planning model, a multi-helicopter search and rescue route planning general algorithm was developed. The operation mechanism of ant colony algorithm was improved by introducing cooperative modes and

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Xie, Hailun, Li Zhang, Chee Peng Lim, Yonghong Yu, and Han Liu. "Feature Selection Using Enhanced Particle Swarm Optimisation for Classification Models." Sensors 21, no. 5 (2021): 1816. http://dx.doi.org/10.3390/s21051816.

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In this research, we propose two Particle Swarm Optimisation (PSO) variants to undertake feature selection tasks. The aim is to overcome two major shortcomings of the original PSO model, i.e., premature convergence and weak exploitation around the near optimal solutions. The first proposed PSO variant incorporates four key operations, including a modified PSO operation with rectified personal and global best signals, spiral search based local exploitation, Gaussian distribution-based swarm leader enhancement, and mirroring and mutation operations for worst solution improvement. The second prop

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Yu, F., and C. Wang. "A Novel Three Dimension Autonomous Chaotic System with a Quadratic Exponential Nonlinear Term." Engineering, Technology & Applied Science Research 2, no. 2 (2012): 209–15. http://dx.doi.org/10.48084/etasr.86.

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A novel three dimension autonomous (3D) chaotic system with a quadratic exponential nonlinear term and a quadratic cross-product term is described in this paper. The basic dynamical properties of the new attractor are studied. The forming mechanism of its compound structure, obtained by merging together two simple attractors after performing one mirror operation, has been investigated by detailed numerical as well as theoretical analysis. Finally, the exponential operation circuit and its temperature-compensation circuit, which makes the new system more applicable from a practical engineering

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Charkovskyy, V. М., and V. D. Serediuk. "BHA with two drill jars to prevent sticking while drilling." Prospecting and Development of Oil and Gas Fields, no. 4(81) (December 28, 2021): 61–70. http://dx.doi.org/10.31471/1993-9973-2021-4(81)-61-70.

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The methods of factorial experiment and regression analysis have been applied ad hoc to search the optimum combinations of technological parameters for the salvage operation with the help of a drilling jar. The factors chosen are the percussive mechanism striker travel, the length of drill collars in the drill assembly and the discharge force. The response functions on the matrix of the central rotatable composite design for three main factors have been obtained. The functions are the relationships between the maximum and minimum internal forces at the upper boundary of the grip and the factor

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Spáčil, Jakub. "Plea of Necessity: Legal Key to Protection against Unattributable Cyber Operations." Masaryk University Journal of Law and Technology 16, no. 2 (2022): 215–39. http://dx.doi.org/10.5817/mujlt2022-2-4.

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Cyber operations represent one of the main security threats today. The number of cyber operations attacking critical infrastructure is increasing year by year and states are looking for means to defend against this threat. However, the origin of hostile cyber operations is often located in the territory of another state, and attacked states must therefore grapple with the question of international law in their search for an effective defence mechanism. If states wish to defend themselves actively, the sovereignty of another state may be infringed, and such an infringement must be justified by

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Liu, Peng. "Numerical Simulation on Water Mist Fire Suppression System Operation in Typical Environment." Advanced Materials Research 732-733 (August 2013): 491–94. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.491.

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Water mist fire suppression system is widely used in many places, for its little damage and greatly reduces the cost of extinguishing fire. But because of the intricate extinguishing mechanism of water mist, it is difficult to design an optimal water mist fire suppression system in a typical place. With the rapid development of computer technology, computational fluid dynamics (CFD) has already been proved to be a useful and powerful tool in fire safety science. Fire Dynamics Simulator (FDS) is used to simulated the interaction of water mist and fire in a typical fire scenario in this paper. T

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Altenberg, Guillermo A. "The Engine of ABC Proteins." Physiology 18, no. 5 (2003): 191–95. http://dx.doi.org/10.1152/nips.01445.2003.

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Proteins that belong to the ATP-binding cassette superfamily span from bacteria to humans and comprise one of the largest protein families. These proteins are characterized by the presence of two nucleotide-binding domains, and recent studies suggest that association and dissociation of these domains is a common basic molecular mechanism of operation that couples ATP binding/hydrolysis to substrate transport across membranes.

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Bjelica, Biljana, Ognjen Bakmaz, and Dragan Vukasović. "The importance of monitoring the realization of income and costs in the management and business of agricultural enterprises in relation to the introduced forms of internal-control mechanisms." Poljoprivredna tehnika 48, no. 2 (2023): 45–51. http://dx.doi.org/10.5937/poljteh2302045b.

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Monitoring the formation of total income and total costs is of great importance for the practical operation of a large number of agricultural enterprises. The actual improvement of business decision-making in agricultural enterprises can be connected with the introduced forms of internal control mechanisms in the processes of regular business in agricultural enterprises. This was the basis of the research in this study. For the purposes of this study, the authors performed two two-way ANOVA analyses, one for the purpose of obtaining real data on the movement of income, and the other for determ

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